Final steps to repair corrupted F2FS SD Card - How to fix "can't read superblock"

[I modified the question to reflect the progress] The TLDR version is, the card is adopted storage that says corrupted f2fs. I used the process detailed Here but when I tried to mount the decrypted SD Card I got "system call failed: Structure needs cleaning".

#mount -t f2fs /dev/mapper/crypt1 /mnt/1/

: /mnt/1: mount(2) system call failed: Structure needs cleaning.

When I tried to use fsck, I got "Error: In use by the system!"

#fsck.f2fs /dev/sdc2

: In use by the system!

Below is the info that may help you help me. I'm not a linux expert, is this something I can correct? After

.f2fs /dev/mapper/crypt1; mount -t f2fs -o ro,norecovery /dev/mapper/crypt1 /mnt/1;

I get: many more like this I'm not sure what to do next; if I restore is the lost directory on the corrupted drive or the main drive?